# MSG_VEL_STD_DEV
| MSG_VEL_STD_DEV | |||||
|---|---|---|---|---|---|
| Packet ID | 0x55 | ||||
| Length | 12 | ||||
| Read / Write | Read | ||||
| Offset | Size | Format | Field | Unit | Description |
| 0 | 4 | float32_t | Velocity_north_standard_deviation | m/s | 北向速度的标准差 |
| 4 | 4 | float32_t | Velocity_east_standard_deviation | m/s | 东向速度的标准差 |
| 8 | 4 | float32_t | Velocity_down_standard_deviation | m/s | 地向速度的标准差 |
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